Patent US3745141A successfully refreshed from Google Patents.
US3745141A
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US
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Sulphonated polyethers
Assignee: Rhodiaceta SA
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Filing: 1971-02-16
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Granted: 1973-07-10
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Expires: 1991-02-16
Abstract
Abstract THE INVENTION PROVIDES NOVEL ALIPHATIC/AROMATIC POLYETHERS CONTAINING SULPHONATE GROUPS WHICH MAY ADVANTAGEOUSLY BE INCORPORATED IN POLYESTERS OR POLYAMIDES AS A DISPERSION OR, IN THE CASE OF POLYESTERS, AS PART OF THE POLYMER MOLECULE, TO IMPROVE THEIR AFFINITY FOR BASIC DYESTUFFS.
Inventors
- 👤 A Palsky
- 👤 L Bonnard
- 👤 R Pich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:05
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G65/00; C08G65/34; C08G65/48; C08G75/00; C08G75/20; C08G75/23; C08L67/00; C08L67/02; C08L71/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |